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The earliest reports detailing the tragic theater shooting in Aurora, Colo., were posted on social media sites, namely Twitter and YouTube. Chris Rapoza whose back was grazed by a bullet shared a photo his pierced shirt online. Mekahlo Medina reports for the NBC4 News at 5 p.m. on July 20, 2012. (Published Friday, Jul 20, 2012)

Updated at 4:32 PM EST on Tuesday, Jul 24, 2012

Using Storify -- an online tool to compile updates, photos and videos from various social media sites -- we've put together a look at the mass shooting in Colorado.